Lecture 24 --- Exercises ======================== Solutions to the problems below must be sent to Submitty for automatic scoring. A separate file must submitted for each problem. Start with the files available on the Piazza resource page as *lec24_ex_files.zip*. Solutions must be submitted by 4 pm on Friday, April 28. **Each problem requires that you write / modify exactly one line of code!** #. Modify the code in ``prob1.py`` to generate a new list where all values are replaced by their absolute values. You must use ``map``, but there is no need for a lambda function. #. Modify the code in ``prob2.py`` to determine the minimum x value of all points that are in the first quadrant (x and y values both positive). This will require you to use ``map``, ``filter`` and ``min``. You can write this in a single line, but for clarity you are welcome to write it on two or three. Do not create a new list. #. Modify the code in ``prob3.py`` to sort the points in a list by their distance from the origin (i.e. by the magnitude of the points). This will require use of a ``lambda`` function. The sort should be from greatest distance to least distance. #. Modify the code in ``prob4.py`` to use a list comprehension statement to convert a list of Fahrenheit temperatures to Celsius, while eliminating those that are below freezing. **Congratulations:** You are finished with the CS 1 lecture exercises!!